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Thread: Is this necessary from a EJ205 to EJ207 conversion

  1. #1

    Is this necessary from a EJ205 to EJ207 conversion

    This was on my 03 donor on the fuel return. No mention in the build manual of using it. What is everyone else doing?
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  2. #2
    Senior Member EODTech87's Avatar
    Join Date
    Feb 2013
    Copperas Cove, Texas
    It's a fuel damper and I personally didn't use it as I replaced the entire fuel system with aftermarket stuff.

  3. #3
    Senior Member fastzrex's Avatar
    Join Date
    Oct 2015
    Oklahoma City
    Definitely the stock fuel damper. Keep it if you will be using all the stock fuel system. You will use an aftermarket unit if you change fuel rails, etc. in most cases.
    ~ Mark

    818C S/N 429ES: Start Date 1 September 2016
    2001 NB Miata LS3 V8 440 rwhp
    2004 Miata MazdaSpeed Factory Turbo

  4. #4
    I'm running an ej207 without it mostly stock outside of the fuel pump, filter, and PTFE fuel lines. My car runs fine without. It wont hurt to have it in though.

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